Having worked with (not for) a few IT outsourcing companies I can tell you that
some of their aims are:-
1. Grow the contract.
2. Try to keep information away from counterpart managers so they become deskilled and useless.
3. employ very cheap staff, who may be useless if there is a problem.
As an aside I know of several contracts which my organisation placed with decent small companies,
and the small company was soon taken over by a large one with foreseeable results. All legal.
Obviously no names.